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Ivenika [448]
3 years ago
9

The diagram below shows a square cardboard with an area of 132.25 cm ².A square of side x cm is cut and removed from each of its

vertices. If the area of the remaining cardboard is 112 cm², find the value of x.​Please help!​
Mathematics
1 answer:
PilotLPTM [1.2K]3 years ago
4 0

Answer:

i think it's 10.6

Step-by-step explanation:

112 = x^2

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If sum of first 6 digits of AP is 36 and that of the first 16 terms is 255,then find the sum of first ten terms.
Cloud [144]

Answer:

100

Step-by-step explanation:

We have the sum of first n terms of an AP,

Sn = n/2 [2a+(n−1)d]

Given,

36= 6/2 [2a+(6−1)d]

12=2a+5d ---------(1)

256= 16/2 [2a+(16−1)d]

32=2a+15d ---------(2)

Subtracting, (1) from (2)

32−12=2a+15d−(2a+5d)

20=10d ⟹d=2

Substituting for d in (1),

12=2a+5(2)=2(a+5)

6=a+5 ⟹a=1

∴ The sum of first 10 terms of an AP,

S10 = 10/2 [2(1)+(10−1)2]

S10 =5[2+18]

S10 =100

This is the sum of the first 10 terms.

Hope it will help.

4 0
3 years ago
Read 2 more answers
For each of the functions below, indicate whether the function is onto, one-to-one, neither orboth. If the function is not onto
Karo-lina-s [1.5K]

Answer:

f_{1} :Z \rightarrow Z is one to one mapping, it is not onto mapping

Step-by-step explanation:

f_{1} :Z \rightarrow Z\\ f_{1} (x) = x^{3}

f₁(x) is one to one mapping

Let x, y \epsilon Z

f₁(x) = f₁(y):

x₁³ = y₁³

f₁(x) is not onto mapping

Example: If f₁(x) = 7,

x₁³ = 7

x_{1} = \sqrt[3]{7}

x₁ is not an element of Z

f_{1} :Z \rightarrow Z is one to one mapping, it is not onto mapping

5 0
3 years ago
Evaluate 4 - 6 + 9 - 3
omeli [17]
4 - 6 + 9 - 3 

= 4
3 0
3 years ago
there are 14 girls trying out for volleyball. Each team will have six players. How many four teams will be made?
nikdorinn [45]

Answer:

2

Step-by-step explanation:

14 divided by 6 = 2.33333333

only 6 in a group so you round it

and you get 2

3 0
3 years ago
You can work at most 20 hours next week. You need to earn at least $92 to cover your weekly expenses. Your dog-
kicyunya [14]

Answer:

x+y  ≤ 20

7.50x+6y ≥ 92

x = dog walking in hours

y = car washing in hours

3 0
3 years ago
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